Adjustable shoring bracket



March 9, 1965 SQUIRE 3,172,634

ADJUSTABLE SHORING BRACKET Filed Feb. 1, 1963 I NVENTOR.

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United States Patent M 3,172,634 ADJUSTABLE SHORING BRACKET Robert K. Squire, Los Angeles, Calif., assignor to Superior Scalfold Co., Torrance, Califi, a corporation of California Filed Feb. 1, 1963, Ser. No. 255,526 8 Claims. (Cl. 248-243) The present invention relates generally to adjustable brackets, and more particularly to heavy structural adjustable brackets used for shoring concrete forms for overhangs and for the temporary support of catwalks and similar constructions.

In the forming of overhangs on structures, for example concrete bridges, shoring is used to support forms for the concrete overhangs at the sides of the bridges, and hangers may also be used to carry the weight of the forms and concrete. In past practices, the use of wood shoring members required on the job cutting to varying lengths, and the use of metal hanger rods required fabrication and welding of the hangers.

According to the present invention, overhang shoring is accomplished by standard adjustable overhang brackets having spaced screw jacks thereon which adjust for all slopes and by which finish elevations can be quickly and accurately attained. At the same time, the screw jacks quickly release the forms for fast stripping and to permit all of the forms to be moved ahead at one time. The brackets are simply mounted, in pro-located holes or anchors, for example, on concrete or metal bridge girders so that they may be quickly and easily assembled and disassembled with the girders. The supporting screw jacks, which are spaced along the horizontal arm of the bracket, may be adjusted in height to the final elevation of the form and to accommodate any slope thereof.

It is therefore an object of the present invention to provide an improved adjustable shoring bracket.

Another object of this invention is the provision of an improved adjustable bracket for heavy structural support of concrete forms and other temporary structures.

A further object of this invention is the provision of an improved structural-overhang supporting bracket adjustable to the elevation and slope of the supported structure.

A still further object of this invention is the provision of an improved adjustable overhang-supporting bracket of strong but simple and economical form, adjustable to varied elevations and slopes of a supported structure, which is readily mountable and dismountable for reuse in another location, and which eliminates the use of wood and similar job-fabricated shoring and supporting members.

These and other objects and features of the invention will be readily apparent to those skilled in the art from the following specification and the appended drawing, in which:

FIGURE 1 is a partial perspective view showing a pair of adjustable brackets according to the present invention in shoring relationship to a supported structure;

FIGURE 2 is a side elevational view of one of the brackets of FIGURE 1; and

FIGURE 3 is a detail sectional view on the line 3-3 of FIGURE 2.

The embodiment of the adjustable shoring bracket according to the present invention selected for illustration in the drawing employs channel arms 11 and 12 extending at right angles to each other and normally mounted to a substantially vertical structural surface with the arm 11 thereagainst and the arm 12 extending substantially horizontally away therefrom. The bracket may be conveniently formed from a single U-sbaped channel which is notched at 13 and then bent at right angles at 14 into 3,172,634 Patented Mar. 9, 1965 the position shown in the drawing. The edges of the notch 13 are thereafter welded together, as indicated in FIGURE 2. A tubular supporting spar 15 is Welded at 16 to the free end of the bracket arm 11 and at 17 adjacent to the free end of the bracket arm 12, the spar 15 serving to stifien and rigidity the bracket and maintain the angular relationship between the arms 11 and 12.

A plate 18 spans the free edges of the legs of the channel arm 11 and is preferably welded thereto adjacent the apex of the arms 11 and 12. This plate is apertured to receive a mounting bolt 19 which extends through the plate 18 and the bight of the channel arm 11 into a mounting anchor 21 in a concrete grider 22. The bracket is obviously mountable as Well to steel girders by the mounting bolt 19 extending through apertures therein and bolted thereto. The anchors 21 for cast griders or the holes in steel girders are preferably positioned when the girder is cast or fabricated, normally at spacings of approximately eight feet.

A pair of tubular members 23 and 24 extend through the bight of the channel arm 12 and are welded thereto, as shown in FIGURES 2 and 3. Through the tubular members 23 and 24 freely extend screws 25 and 26 of jacks 27 and 28, respectively. Nuts 29 are mounted on the screws 25 and 26 above the tubular members 23 and 24 to adjust the elevation of the jacks 27 and 28, the screws 25, 26 and nuts 29 transmitting the weight of the shored structure through the tubular members 23, 24 to the bracket. Locking nuts 31 are mounted on the screws 25, 26 to lock them in adjusted positions.

Conveniently the inner screw 25 is shorter than the outer screw 26 whereby, while both provide adequate adjustment for final elevational positioning, the longer screw 26 gives greater adjustment to the jack 28 to provide for sloping of the supported structure upwardly from the girder, as may occur in forms for overhangs of cast concrete. The tubular member 24 may similarly be made longer than the tubular member 23 to adequately support an extended screw 26 in the condition Where the supported structure slopes upwardly toward the outside.

At the upper end of each screw 25, 26 is mounted a U- shaped channel 32, as by depending arms 33 pivotally mounted on the upper ends of the screws by pivot pins 34. Within the channels 32 are received supporting beams, such as 35, which may extend longitudinally or transversely of the bracket arm 12. The drawing illustrates the beams 35 as extending parallel to the bracket arms and having transversely extending beams 36 resting thereon upon which the upper platform or form 37 is supported. The axes of the channels 32 can be located transversely of the bracket arms 12 and the beams 36 mounted directly therein in an alternate construction.

It will be seen that the adjustable shoring brackets according to the present invention may be readily mounted and dismounted on the girders 22, of concrete or steel construction, by manipulation of the mounting bolts 19. The channels 32 may be rotated with their respective screws 25, 26 to locate the axes of the channels either longitudinally or transversely of the bracket arm 12, as desired. Rotation of each nut 29 will raise and lower the respective screw 25, 26 of the jacks 27, 28 to raise and lower the adjacent end of the supported structure into the proper elevation, and the screws of the jacks may thereafter be locked in position by tightening of the nuts 31.

Since the jacks 27, 28 are individually adjustable, they serve not only to raise the supported structure to the desired final elevation, but can be adjusted to impart any desired slope to the supported structure, or to accommodate irregularly shaped supported elements. The pivoting of the channels 32 by the pivot pins 34 permits them to rock relative to their supporting screws 25, 26, partic- 3 ularly when the jacks 27 and 23 are of dissimilar length to provide a slope adjustment.

The adjustable shoring bracket according to the present invention provides a standard re-usable steel structure which eliminates on-the-job fabrication and waste of wood shoring members and provides a considerable saving in both labor and materials in shoring operations. It likewise eliminates the need for hangers and hanger rods, Wood jacks and wedges.

While a specific embodiment of the invention has been specifically illustrated and described, it will be understood that this invention is not limited thereto, as many variations will be apparent to those skilled in the art, and the invention is to be given its broadest interpretation within the terms of the following claims.

I claim:

1. An adjustable shoring bracket comprising: a pair of elongated structural members connected together at one end to form substantially a right angle; a structural spar interconnecting substantially the free ends of said members; means for mounting one of said members on a supporting wall; and a pair of supporting jacks mounted on the other of said members to extend upwardly therefrom in horizontally spaced relation, said jacks being independently adjustable relative to said other member to determine their final supporting heights at any desired relative levels.

2. The adjustable shoring bracket defined in claim 1 in which said structural members are of channel shape in cross-section and have the structural spar and supporting jacks welded therein.

3. The adjustable shoring bracket defined in claim 1 in which said structural members are channel-shaped in cross-section and have a continuous homogeneous bight, the adjacent side legs of said members meeting at an angle to both members and being welded together at their junction.

4. An adjustable shoring bracket comprising: a pair of elongated structural members connected together at one end to form substantially a right angle; a structural spar interconnecting substantially the free ends of said members; means for mounting one of said members on a supporting structure to support the bracket with the other member extending substantially horizontally from the supporting structure; a pair of tubular members mounted on said horizontal structural member in horizontally spaced relation; a jack screw extending through each of said tubular members; an adjusting nut on each jack screw above each tubular member; and a structure-supporting member at the end of each jack screw, said nuts being independently adjustable to independently vary the elevated positions of said structure-supporting members.

5. The adjustable shoring bracket defined in claim 4 in which said structure-supporting members are pivotally mounted on the ends of the jack screws so as to be tiltabie relative thereto.

6. The adjustable shoring member defined in claim 4 in which the structure-supporting members are of substantially channel shape to receive a structural beam and are pivotally mounted on the ends of the jack screws to tilt relative thereto.

7. The adjustable shoring bracket defined in claim 4 in which the jack screw and tubular member adjacent the free end of the horizontal bracket member are substantially longer than the jack screw and tubular member adjacent the connected end of the horizontal bracket member to accommodate sloping of the supported structure upwardly toward the outside.

8. The adjustable shoring bracket defined in claim 7 in which the structure-supporting members are generally channel shaped, beam-receiving brackets mounted on the upper ends of said jack screws to pivot about an axis transverse with respect to both the jack screws and the axis of the channel brackets whereby the structure-supporting members will tilt relative to substantially vertical jack screws to accommodate an inclined supported beam.

References Cited in the file of this patent UNITED STATES PATENTS 2,591,227 Banko Apr. 1, 1952 2,684,222 Miller July 20, 1954 2,855,654 Stroben Oct. 14, 1958 FOREIGN PATENTS 1,240,904 France Aug. 1, 1960 

1. AN ADJUSTABLE SHORING BRACKET COMPRISING: A PAIR OF ELONGATED STRUCTURAL MEMBERS CONNECTED TOGETHER AT ONE END TO FORM SUBSTANTIALLY A RIGHT ANGLE; A STRUCTURAL SPAR INTERCONNECTING SUBSTANTIALLY THE FREE ENDS OF SAID MEMBERS; MEANS FOR MOUNTING ONE OF SAID MEMBERS ON A SUPPORTING WALL; AND A PAIR OF SUPPORTING JACKS MOUNTED ON THE OTHER OF SAID MEMBERS TO EXTEND UPWARDLY THEREFROM IN HORIZONTALLY SPACED RELATION, SAID JACKS BEING INDEPENDENTLY ADJUSTABLE RELATIVE TO SAID OTHER MEMBER TO DETERMINE THEIR FINAL SUPPORTING HEIGHTS AT ANY DESIRED RELATIVE LEVELS. 